CN217571947U

CN217571947U - CNC milling machine is with repeated positioning clamping device

Info

Publication number: CN217571947U
Application number: CN202221702567.XU
Authority: CN
Inventors: 邓先霞
Original assignee: Hangzhou Zhijian Technology Co ltd
Current assignee: Hangzhou Zhijian Technology Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-10-14
Anticipated expiration: 2032-07-04

Abstract

The utility model provides a CNC milling machine is with repeated positioning clamping device, belongs to CNC milling machine is with clamping frock technical field. The clamping device comprises a bottom plate for placing a product and clamping assemblies arranged on two sides of the bottom plate, wherein a group of positioning pins are arranged on the bottom plate, vent holes are formed in the positioning pins, air inlets communicated with the group of vent holes are formed in the bottom plate, and the air inlets are connected with an external air source; a set of step holes are formed in the bottom plate, fixing blocks are fixedly mounted at the bottoms of the step holes, the positioning pins are arranged at the upper portions of the step holes, and springs are arranged between the fixing blocks and the positioning pins. In the utility model, the product can be accurately positioned and quickly limited and clamped by the clamping block and the positioning pins which are arranged and the cylinder; the vent holes are formed in the positioning pins, foreign matters in the positioning holes of the product and processing scraps remained on the bottom plate can be automatically cleaned, and the time cost and the labor cost of manual cleaning are reduced; through setting up the air channel, the guide air current flows, has improved the efficiency of self-cleaning.

Description

CNC milling machine is with repeated positioning clamping device

Technical Field

The utility model belongs to the technical field of the clamping frock for the CNC milling machine, concretely relates to CNC milling machine is with repeated positioning clamping device.

Background

When a CNC milling machine is adopted for processing batch products, a common machining tool cannot meet the requirement of repeated clamping precision; and in the clamping process of the workpiece, foreign matters carried in the product positioning holes and scraps produced in the machining process can be remained on the bottom plate, manual cleaning is needed during clamping, and extra cleaning time and labor cost are increased.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem that exists among the prior art, the utility model aims to provide a clamping precision is high, and can clear up the CNC milling machine of foreign matter, sweeps by oneself and use repeated positioning clamping device.

The utility model provides a following technical scheme: the utility model provides a CNC is repeated positioning clamping device for milling machine, is equipped with a set of locating pin including the bottom plate that is used for placing the product usefulness and sets up the clamping component in the bottom plate both sides on the bottom plate, the inside of locating pin is equipped with the air vent, sets up the air inlet that is linked together with a set of air vent on the bottom plate, and outside air supply is connected to the air inlet.

Furthermore, a set of step holes is formed in the bottom plate, fixing blocks are fixedly mounted at the bottoms of the step holes, the positioning pins are arranged on the upper portions of the step holes, and springs are arranged between the fixing blocks and the positioning pins.

Furthermore, the lower part of the positioning pin is provided with a limiting block which is positioned in the step hole, and the upper end of the positioning pin penetrates through the step hole and extends to the outer side of the bottom plate.

Furthermore, the end part of the upper end of the positioning pin is of a circular truncated cone structure, and a group of vent grooves are uniformly distributed in the side wall of the circular truncated cone structure.

Furthermore, a boss is arranged at the mounting position of the positioning pin on the bottom plate.

Furthermore, the clamping assembly comprises an air cylinder and a clamping block arranged at the output end of the air cylinder.

Furthermore, a clamping head is arranged on the clamping side of the clamping block, and the lower end face of the clamping head is a slope.

Through adopting above-mentioned technique, compare with prior art, the beneficial effects of the utility model are as follows:

1) In the utility model, the product can be accurately positioned by the clamping block and the positioning pin, and the quick limiting clamping of the product is realized by matching with the cylinder;

2) In the utility model, the vent holes are arranged on the positioning pins, so that foreign matters in the positioning holes of the product and processing scraps remained on the bottom plate can be automatically cleaned while the product is clamped, and the time cost and the labor cost of manual cleaning are reduced;

3) In the utility model, the vent grooves are arranged at the end parts of the positioning pins to guide the air flow to flow, thereby improving the self-cleaning efficiency;

4) The utility model discloses in, the lower terminal surface of holding head is domatic structure, coordinates the clamping structure who corresponds on the product for the holding head forms a decurrent effort to the product at the in-process of horizontal centre gripping, closely the pressfitting with product and bottom plate, has further improved the precision of product clamping.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the internal structure of the present invention;

fig. 4 is a schematic structural view of the device for clamping products.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments of the specification. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in order to provide a better understanding of the present invention to the public, certain specific details are set forth in the following detailed description of the invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.

Referring to fig. 1-4, a re-positioning and clamping device for a CNC milling machine includes a base plate 1, a positioning pin 2, a fixing block 3, a spring 4 and a clamping assembly, wherein the clamping assembly is disposed at two sides of the base plate 1, and the clamping assembly includes a cylinder 5 and a clamping block 6.

Specifically, four step holes 102 are formed in the bottom plate 1, the fixing block 3 is fixedly mounted at the bottom of the step holes 102, the positioning pin 2 is limited at the upper portion of the step holes 102, and the spring 4 is located between the positioning pin 2 and the fixing block 3.

Wherein:

the middle part of locating pin 2 has seted up air vent 201, and the lateral part of bottom plate 1 is equipped with the air inlet 101 with air vent 201 intercommunication, and air inlet 101 passes through the pipeline and communicates with outside air supply.

The upper end of the positioning pin 2 passes through the step hole 102 and extends to the outer side of the bottom plate 1; the upper end part of the positioning pin 2 is in a circular truncated cone structure, and a group of air grooves 203 are uniformly distributed on the side wall of the circular truncated cone structure, so that air flow can be conveniently guided.

The lower part of the positioning pin 2 is provided with a limiting block 202, the limiting block 202 is positioned in the step hole 102 and is matched with the spring 4 to limit the positioning pin 2 in the vertical direction.

The base plate 1 is provided with a boss 103 at the mounting position of the positioning pin 2, and the boss is used as a supporting surface of a product to reduce the processing area of the supporting surface of the product.

Specifically, clamping unit includes cylinder 5 and sets up the tight piece 6 of clamp at the cylinder 5 output, and the tight side that presss from both sides tight piece 6 is equipped with clamping head 601, and clamping head 601's lower terminal surface is domatic, sets up corresponding cooperation structure on the product.

The specific process of the device of the embodiment when in operation is as follows:

placing the positioning holes in the products above the corresponding positioning pins 2, ventilating an external air source into the air inlet 101 through the pipeline, and enabling air flow to flow out of the end parts of the upper ends of the positioning pins 2 along the air vents 201, wherein at the moment, the products are suspended above the positioning pins 2 under the action of the air flow, the air flow firstly cleans the positioning holes in the products, and then flows out along the gaps between the positioning holes in the products and the end parts of the upper ends of the positioning pins 2 and the air vent grooves 203 to clean the surfaces of the bottom plates 1 around the positioning holes;

then, starting the air cylinders 5 in the clamping assemblies at the two sides to drive the clamping blocks 6 to clamp the product, wherein the product is provided with clamping grooves matched with the clamping blocks 6, and in the clamping process, the lower end surface of the clamping head 601 extrudes the side walls of the clamping grooves to form a vertical downward pressure and a horizontal clamping force on the product, so that the product is clamped and fixed along the horizontal direction, and meanwhile, the bottom of the product has a downward pressure on the positioning pin 2, and further the spring 4 is compressed until the bottom of the product is tightly pressed with the boss 103, and finally, the accurate positioning and limiting of the product are realized; the elastic positioning structure that locating pin 2 and spring 4 are constituteed can reduce the error of repeated location when carrying out the centre gripping to different products, guarantees the accuracy of product location.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a CNC milling machine is with repeated positioning clamping device which characterized in that: including being used for placing the bottom plate of product usefulness and setting up the clamping component in the bottom plate both sides, be equipped with a set of locating pin on the bottom plate, the inside of locating pin is equipped with the air vent, sets up the air inlet that is linked together with a set of air vent on the bottom plate, and outside air supply is connected to the air inlet.

2. The re-locating and clamping device of claim 1, wherein the bottom plate has a set of stepped holes, the bottom of the stepped holes is fixed with a fixed block, the locating pins are disposed on the upper portion of the stepped holes, and springs are disposed between the fixed block and the locating pins.

3. The re-positioning and clamping device for the CNC milling machine as claimed in claim 2, wherein the lower portion of the positioning pin is provided with a limiting block, the limiting block is located in the stepped hole, and the upper end of the positioning pin passes through the stepped hole and extends to the outer side of the bottom plate.

4. The re-locating and clamping device for the CNC milling machine as claimed in claim 3, wherein the top end of the locating pin is a circular truncated cone structure, and a set of ventilation slots are uniformly distributed on the side wall of the circular truncated cone structure.

5. The re-positioning and clamping device for the CNC milling machine as recited in claim 4, wherein the base plate is provided with a boss at the mounting position of the positioning pin.

6. The re-positioning and clamping device for the CNC milling machine as claimed in claim 1 or 5, wherein the clamping assembly comprises a cylinder and a clamping block arranged at the output end of the cylinder.

7. The re-positioning and clamping device of claim 6, wherein the clamping side of the clamping block is provided with a clamping head, and the lower end surface of the clamping head is a slope surface.